To compare the visual functional outcomes with accommodating and multifocal intraocular lenses IOLs. Subjective refraction, visual acuity, contrast sensitivity CSintraocular aberration, Accommodating iols types subjective photic phenomena were detected at 3mo after surgery. The spherical equivalent in the three groups was Both accommodating and multifocal IOLs can successfully restore distance and uncorrected intermediate visual acuities.
ReZoom refractive multifocal IOLs have better performance in distance-corrected intermediate visual acuity than ZMA00 diffractive multifocal IOLs, and the latter achieved better near visual acuity and efficiently decreased the optical aberration.
Visual performance is crucial to daily life. After cataract surgery with traditional monofocal intraocular lens IOL implantation, this ability usually declines in near visual acuity for the lack of accommodation. At present, the ultimate postoperative goal is to acquire the whole range of visual acuity with better visual quality. Many sophisticated IOL designs have been introduced to clinical practice, like multifocal and accommodating IOLs, to restore functional vision at the near distance.
Multifocal IOLs, which involve refractive or diffractive techniques, have been demonstrated to provide good vision without the use of spectacles. However, optical side effects, including decreased contrast sensitivity, glare disability, and halos, have also been reported . Accommodating IOLs have fewer optical problems, but do not restore the crisp level of near visual acuity that can be found with multifocal IOLs and thus provide a real near focus . The lens is inserted through a commercially Accommodating iols types 2.
It has five Accommodating iols types refractive zones alternating for distance and near vision, with aspheric transitions that allow for intermediate vision.
Zones 2 and 4 are near dominant and provide 3. The distribution of light is dependent on pupil size.
The anterior surface is a wavefront aspheric design, whereas the posterior surface is diffractive with 29 concentric circles. The light entering the IOL is split equally into a distance and near focus 4. All of the three IOLs block ultraviolet radiation but Accommodating iols types the passage of blue light, which is fundamental to good scotopic sensitivity . The aim of this study was to evaluate Accommodating iols types compare the clinical performance of the three kinds of IOLs in presbyopic patients by examining subjective refraction, visual acuity, CS, intraocular Accommodating iols types and subjective photic phenomena.
This retrospective, comparative study was approved by the Ethics Committee of Shandong Eye Institute and conformed to the tenets of the Helsinki Declaration. Fifty-one patients 60 eyes with visually significant cataracts treated by cataract surgery and IOL implantation at our institution were collected in this study.
The exclusion criteria included corneal astigmatism over 1. The operations were performed under local anesthesia by one experienced surgeon. Irrigation and aspiration of the cortex and IOL implantation in the capsular bag were performed.
Patients with complications like capsular rupture, zonulysis, and obvious posterior capsule opacification during the follow-up were also excluded. The patients were divided into 3 groups according to the types of their implanted IOLs. As a retrospective the grouping procedure was non-randomized.
In group A, 16 patients 20 eyes received implantation of an accommodating IOL Tetraflex, model KHwith the postoperative refraction targeted as 0 to The follow-up was more than 3mo. All examinations were carried out under photopic light conditions. The distance manifest refraction was measured by an auto refractometer Canon R, Canon, Tokyo, Japan. Monocular photopic and mesopic contrast sensitivities CS were measured with best distance correction.